Hi,
I have software RAID1 (using mdadm) on all my partitions (all jfs).
mdadm fails to unmount my / and /usr partitions like in this post: https://forums.gentoo.org/viewtopic-t-923332-highlight-mdraid+stop.html
Despite everyone says "it's OK", it looks to me that that something is going wrong in my specific case as on each reboot fsck finds jfs corrupted (if I am not mistaken - see the below log) and has to replay the journal logs:

I don't see corruption. JFS always replays its log before mounting rw. That is what you have to have the 'ro' kernel parameter, if I remember correctly._________________First things first, but not necessarily in that order.